Technical characteristics of Koss Porta Pro Utility: · Type of construction: overhead, open; · Driver type: dynamic; · Resistance: 60 Ohms; · Sensitivity: 101 dB; · Frequency range: 15–25000 Hz; · Total cable length: 1.2 m; · The plug is straight, standard 3,5 mm. There are no differences between Koss Porta Pro and Porta Pro Utility in The Koss Porta Pro Wireless utilizes Bluetooth connectivity technology, enabling wireless communication with compatible devices. Its Bluetooth version is 4.1, ensuring efficient and stable connections. In terms of sound performance, the headset is capable of reaching a maximum sound pressure level of 101 dB. August 31, 2010. How To Use Your Koss Porta Pro® On-Ear Headphone Limited Lifetime Warranty That being said, the cheap Koss headphones do have some issues, which are acceptable for the price, but which stop them from being S-tier, namely the poor bass extension and the strange behavior at 4-5 kHz which depends on the pads. Just look at the FR charts and you'll see - check oratory1990. ServiceServices Meze Elite/HD600/HD58X | Stax GOD After thousands of votes Koss would release a new version of it's Porta Pro® Classic in the same legendary Rhythm Beige colorway as the Pro4AA. Fast forward to 2017, fourty-seven years after the introduction of the Pro/4AA, Koss announced their latest on-ear headphone to great fanfare the KPH30i . You are assuming those retailers exist. Regular Porta Pro price where I live is $60, some offer it for $75. The only place where I can find it for $45, doesn't include shipping in the price and doesn't have a return policy, so getting them at $50 is like getting them at a discount. From a rich bass response to a remarkably wide frequency range, never miss the intricacies of music with the Koss Porta Pro. The Koss Porta Pro is now available with a high-quality microphone allowing you to take calls when you are on the move. IMPEDANCE. 60 ohms. SENSITIVITY. The KSC75 debuted in 2005 as the KSC35’s cheaper alternative and has since remained as a cornerstone of every audiophile’s “newbie recommendation list”. Koss classifies this as simply a “clip-on” but doesn’t really specify what established category this thing falls under. It’s clearly not an IEM/in-ear headphone given that .

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